Denso 671-6201 Spark Plug Wire Set

Denso 671-6201 Spark Plug Wire Set

Denso 671-6201 is a 7mm spark plug wire set built to match factory-installed wire sets in form, fit, color, and performance. It is a direct OE-style replacement for select Nissan Frontier and Nissan Xterra applications, with construction that meets or exceeds OE/OES standards.

The Denso First Time Fit line focuses on original-equipment accuracy, making this wire set a practical choice for drivers who want the same routing, terminal style, and boot configuration used from the factory. For 2002-2004 Nissan Frontier and 2003-2004 Nissan Xterra models, 671-6201 supports a clean, direct replacement path.

Key Features

• 7mm insulation outside diameter for OE-style ignition wire sizing
• Direct-fit replacement for select Nissan Frontier and Nissan Xterra models
• 90-degree spark plug end boots for routed engine bay layouts
• Female spark plug end terminal type with male distributor/coil end terminal
• Silicone-based spark plug boot material for heat-resistant routing
• Built to match factory form, fit, color, and performance
• Denso First Time Fit product line for OE-style replacement accuracy

Detailed Description

Denso 671-6201 spark plug wire set is engineered for drivers seeking an OE-style ignition wire replacement with the correct terminal and boot configuration. The set uses 7mm insulation and a mix of angled and straight spark plug end boots to match the routing needs of the original application. The spark plug end uses a female terminal type, while the distributor or coil end uses a male terminal type, helping maintain proper connection geometry.

This part fits 2002-2004 Nissan Frontier and 2003-2004 Nissan Xterra, both in 7mm applications. If you are searching for a spark plug wire set for a 2002-2004 Nissan Frontier or a 2003-2004 Nissan Xterra, Denso 671-6201 provides a direct replacement option aligned with factory specifications. This part cross-references NGK NX14 for the same application.

What It Helps Address

• Misfires caused by worn or deteriorated ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition transfer
• Voltage leakage from cracked or aged wire insulation
• Routing issues when replacing damaged OE-style wire sets

Installation Notes and Tips

Match each wire to the original routing before removal to preserve correct cylinder order and heat clearance. Confirm the 90-degree boot locations and terminal orientation during installation, especially on Nissan Frontier and Nissan Xterra applications. Inspect coil and plug connection points for corrosion or carbon tracking before installing the new set.

Quality Assurance

Denso First Time Fit wire sets are built to OE/OES standards for form and performance consistency. The 671-6201 is designed as an OE-style replacement for factory-equivalent ignition service on the listed Nissan applications.